US9270066B2 - Plug-in device having a plug with blades and a pivot with a locking cam and a bending cam - Google Patents
Plug-in device having a plug with blades and a pivot with a locking cam and a bending cam Download PDFInfo
- Publication number
- US9270066B2 US9270066B2 US14/526,538 US201414526538A US9270066B2 US 9270066 B2 US9270066 B2 US 9270066B2 US 201414526538 A US201414526538 A US 201414526538A US 9270066 B2 US9270066 B2 US 9270066B2
- Authority
- US
- United States
- Prior art keywords
- plug
- circuit board
- pivot
- contact
- plug element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005452 bending Methods 0.000 title claims description 28
- 238000000034 method Methods 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000007747 plating Methods 0.000 claims 1
- 239000004033 plastic Substances 0.000 description 14
- 238000005476 soldering Methods 0.000 description 4
- 239000004417 polycarbonate Substances 0.000 description 3
- 229920000515 polycarbonate Polymers 0.000 description 3
- 229920004142 LEXAN™ Polymers 0.000 description 2
- 239000004418 Lexan Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/66—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure with pins, blades or analogous contacts and secured to apparatus or structure, e.g. to a wall
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
- H01R13/42—Securing in a demountable manner
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/44—Means for preventing access to live contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/66—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure with pins, blades or analogous contacts and secured to apparatus or structure, e.g. to a wall
- H01R24/68—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure with pins, blades or analogous contacts and secured to apparatus or structure, e.g. to a wall mounted on directly pluggable apparatus
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R35/00—Flexible or turnable line connectors, i.e. the rotation angle being limited
- H01R35/04—Turnable line connectors with limited rotation angle with frictional contact members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/70—Coupling devices
- H01R12/71—Coupling devices for rigid printing circuits or like structures
- H01R12/712—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit
- H01R12/714—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit with contacts abutting directly the printed circuit; Button contacts therefore provided on the printed circuit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/70—Coupling devices
- H01R12/71—Coupling devices for rigid printing circuits or like structures
- H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
- H01R12/722—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits
- H01R12/724—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits containing contact members forming a right angle
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/70—Coupling devices
- H01R12/71—Coupling devices for rigid printing circuits or like structures
- H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
- H01R12/722—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits
- H01R12/728—Coupling devices without an insulating housing provided on the edge of the PCB
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
- H01R13/71—Contact members of coupling parts operating as switch, e.g. linear or rotational movement required after mechanical engagement of coupling part to establish electrical connection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R31/00—Coupling parts supported only by co-operation with counterpart
- H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
- H01R31/065—Intermediate parts for linking two coupling parts, e.g. adapter with built-in electric apparatus
Definitions
- the present invention relates to an plug in device, and more particularly to a plug-in device having a foldable plug.
- a plug-in device such as an electrical charger, generally includes an insulating housing, a plug and a circuit mounted within the housing.
- the plug is used to accept power supplied by an external power source and deliver the power to the circuit.
- the plug of a typical plug-in device has two conducting blades extending from the housing. The actual configuration of the blades depends on the country for which the plug-in device is designed.
- One prior art charger with a foldable plug is the charger provided by PALM COMPUTING®.
- Their charger has a cylindrical housing base, with a circuit board arranged in the housing base.
- the paired blades are placed on top of the plastic positioner.
- the paired blades rest on a holder in the plastic positioner.
- a housing cover, made of the same material as the housing, is then placed over the blades, and the plastic positioner is bonded to the housing cover.
- the housing cover is then permanently coupled to the housing base.
- a force is applied to the blades by a bending tab on the plastic positioner, when a user opens or closes the blades, which snaps the blades into the open and closed positions.
- the blades exert pressure on the plastic holder continuously, whether they are open or closed.
- this device has a number of drawbacks.
- FIG. 1A is an exploded top-view illustrating the assembly of a plug-in device having a foldable plug according to one embodiment of the present invention.
- FIG. 1B is an exploded bottom-view illustrating the assembly of a plug-in device having a foldable plug according to one embodiment of the present invention.
- FIGS. 2A-2E are cross-sectional views, showing the foldable plug assembly, in the open and closed configuration according to one embodiment of the present invention.
- FIGS. 3A-3B are top and bottom views of embodiments of the blade element, including the pivot and the cams.
- FIGS. 4A-4D are views of the top housing, including the bending tab and pivot positioner according to one embodiment of the present invention.
- FIGS. 5A-5D are the views of the bottom of the housing, including the plug assembly seat, blade positioner, and locking tab according to one embodiment of the present invention.
- FIGS. 6A-6G are views of the circuit board where a contact clip element is attached, including views with the contact clip element according to one embodiment of the present invention.
- FIGS. 7A-7P are views of embodiments of the contact clip element, designed to clip into a circuit board, to provide an electronic contact without soldering.
- the present invention is a plug-in device having a foldable plug, and the configuration of the foldable plug and contacts in the plug-in device.
- the system in one embodiment includes a housing having a top and a bottom, a circuit board, and a blade element. Rather than three pieces having to fit together to hold the blade assembly, only two elements are needed, the top and bottom housing. No additional elements are needed to hold the plug in place and provide the satisfactory clicking open and closed features. Furthermore, because the plug element is positioned such that when the blade is open no pressure is exerted on the elements of the housing, the foldable plug opening and closing force does not deteriorate with use.
- the system utilizes a contact clip to couple a circuit board to the plugs. The contact clip enables solid contact without soldering.
- FIG. 1A is an exploded top-view illustrating the assembly of the plug-in device having a foldable plug according to one embodiment of the present invention.
- the plug-in device includes a bottom 110 , which includes locking tab and a blade holder, where the plug assembly 120 fits.
- the bottom 110 is an integral element, in one embodiment.
- a circuit board 130 fits into the bottom 110 .
- the circuit board 130 is supported on small support steps 115 in the side of the bottom 110 .
- the circuit board 130 has a cut-out 135 in one embodiment, around the blade assembly area.
- the top 140 fits over the bottom, and provides the pivot positioner and the bending tab, which provides force for locking the blade into the closed position.
- the top 140 and bottom 110 are permanently coupled together once the plug-in device is assembled.
- the top 140 and bottom 110 are plastic, and are coupled together using ultrasonic welding.
- the housing is made of Lexan 940 polycarbonate plastic. Using Lexan 940 provides a non-flammable and impact resistant housing
- FIG. 1B is an exploded bottom-view illustrating the assembly of the plug-in device having a foldable plug according to one embodiment of the present invention.
- the top and/or the bottom elements are each made in a single piece, by a process such as injection molding.
- the top 140 or bottom 110 may be made by attaching the blade holder, pivot positioner, and/or bending tab to the appropriate housing element 110 , 140 . In one embodiment, such attachment may be via adhesive, ultrasonic welding, or another mechanism.
- the blade element is slightly different in configuration between FIGS. 1A and 1B . In FIG. 1A the contacts for the blade element are on the side, whereas in FIG. 1B the contacts for the blade elements are on the top.
- FIG. 2A-2E are cross-sectional views, showing the foldable plug assembly, in the open and closed configuration according to one embodiment of the present invention.
- FIG. 2A illustrates the top of the case, showing the cut for the cross-sectional views.
- FIG. 2B and in more detail in FIG. 2C , with the blade closed the bending tab 210 coupled to the top of the housing 220 pushes the pivot 250 of the blade assembly against the blade holder 270 in the bottom of the housing 260 .
- the pivot 250 is shaped with two cams, referred to as the bending cam and the locking cam.
- An embodiment of the pivot including the two cams can be seen in FIGS. 3A and 3B in more detail.
- the locking cam is on the blade holder, and the bending tab has minimal force or no force exerted on it.
- the locking cam ensures that the blades remain open.
- FIGS. 3A-3B are top and bottom views of embodiments of the blade element, including the pivot 300 and the cams 310 , 350 .
- the central pivot element includes the two cams 310 , 350 , discussed above.
- the cams 310 , 350 lock the blade elements into the two positions, open and closed.
- FIG. 3A shows one embodiment of the locking cam 310 , which ensure that the blades remain open once opened.
- FIG. 3B shows one embodiment of the bending cam 350 , which ensure that the blades remain closed, and open with a satisfying click, when closed.
- the cam 310 of FIG. 3A shows an electrical contact 320 at the sides of the blade element.
- FIG. 3B in contrast, shows the electrical contact 360 at the bottom of the blade element. Other locations for the electrical contact may also be used.
- FIGS. 4A-4D are views of the top housing, including the bending tab and pivot positioner according to one embodiment of the present invention.
- the top housing has a positioner consisting of rounded plastic elements integral with the housing, that ensure that the blade element stays in place and can rotate. It also has a bending tab, which provides force to provide the click-feel of the blade opening and closing. The click-feel is the snapping motion and sound that people expect when opening and closing a foldable plug.
- the entire top housing may be injection-molded from a single piece of plastic.
- the cross-ribs shown which provide support for the housing and stability for the elements of the blade are attached to the housing.
- the plastic is Polycarbonate.
- FIGS. 5A-5D are the views of the bottom of the housing, including the plug assembly seat, blade positioner 510 , and locking tab 520 according to one embodiment of the present invention.
- the blade positioner 510 includes grooves for the blades to reside in, when the blades are in the closed position, as well as rounded areas in which the pivot is placed.
- the locking tab 520 is a small element, on top of which the locking cam rests when the blade is in the open position. This ensures that the blades do not turn too far when they are opened. It also enables the blade assembly not to exert force on the bending tab when the blade is in the open position.
- the bottom of the housing also includes support steps 530 on which a circuit board rests.
- the entire bottom housing may be injection-molded from a single piece of plastic. In another embodiment, some elements may be glued into the housing. In one embodiment the plastic is Polycarbonate. This means, however, that the blade element, which is designed to conduct power from the AC outlet to a circuit board located within the housing, requires an electrical contact.
- the blade element shown in FIG. 3A has a contact point at the ends of the pivoting element, shown as the small extending piece in the drawing.
- the blade element has a contact at the top of the blade enclosure.
- the contact point(s) are designed to couple the metal of the blade to the circuit board (not shown here, but which can be seen in FIGS. 1A and 1B ).
- the contact point is electrically coupled to the circuit board, in one embodiment, via a contact clip element.
- FIGS. 6A-6G are views of the circuit board where the contact clip element is attached, including views with the contact clip element according to one embodiment of the present invention.
- FIG. 6A illustrates the circuit board 610 and clip 620 attached to the circuit board.
- Printed circuit boards in general, connect components using conductive tracks on a substrate.
- Various elements may be mounted on a circuit board using through-holes into which the pins of the elements are inserted, or surface pads onto which pins of the elements are attached.
- conductors on different layers are connected through electrically conductive holes called via.
- alignment holes 630 are placed for each contact clip element 620 .
- two holes are placed a particular distance apart.
- the holes 630 are electrically connected through a surrounding surface pad 640 , in one embodiment.
- the holes themselves are conductive vias 650 that attach to traces or electrical layers on the circuit board.
- the alignment holes may be mounting holes that are not conductive. In one embodiment, in that instance surrounding pads 640 in proximity to the mounting holes may be used to electrically connect the contact clip element to the elements on the circuit board.
- the holes 630 for the contact clip elements are placed on either side of the cut-out which surrounds the blade enclosure, and which is in close proximity, therefore, to the blade element, and thus the blade element contacts.
- the clips are, in one embodiment, shaped to snap into the holes. This enables the placement of the contact clips without any soldering.
- FIG. 6G shows the cross-section, showing that a dimple in the clip fits into a drilled alignment hole securely.
- the contact clips are removable, they are securely attached.
- the clips are gold plated.
- FIGS. 7A-7P are views of two exemplary embodiments of the contact clip, designed to clip onto a circuit board, to provide an electronic contact without soldering according to one embodiment of the present invention.
- FIG. 7A-H show one embodiment of the contact clip element, showing the upward extending contact point. This configuration is designed to be coupled to a blade element that has as its contact points at the ends of the pivoting element.
- FIG. 7I-P show another embodiment of the contact clip element, showing the sideways extending contact point. This configuration is designed to be coupled to a blade element that has as its contact points at the top of the pivoting element.
- the clip may be used. It should be understood by one of skill in the art that such snap-on contacts may be used in designs other than a plug in-device or charger.
- a snap-on contact may be used in any system that requires a contact with an off-circuit-board connection.
- the shapes of the contact clip elements shown in the figures are merely exemplary.
- the contact clip element encompasses any clip-on connection that is designed to be coupled to the edge of a circuit board using a drilled hole on a circuit board, to electrically connect an off-board element with the circuit board.
Abstract
Description
Claims (20)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/526,538 US9270066B2 (en) | 2013-10-29 | 2014-10-29 | Plug-in device having a plug with blades and a pivot with a locking cam and a bending cam |
CA2869549A CA2869549C (en) | 2013-10-29 | 2014-10-29 | A plug-in device having a foldable plug |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201361897180P | 2013-10-29 | 2013-10-29 | |
US14/526,538 US9270066B2 (en) | 2013-10-29 | 2014-10-29 | Plug-in device having a plug with blades and a pivot with a locking cam and a bending cam |
Publications (2)
Publication Number | Publication Date |
---|---|
US20150118873A1 US20150118873A1 (en) | 2015-04-30 |
US9270066B2 true US9270066B2 (en) | 2016-02-23 |
Family
ID=51842401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/526,538 Active US9270066B2 (en) | 2013-10-29 | 2014-10-29 | Plug-in device having a plug with blades and a pivot with a locking cam and a bending cam |
Country Status (3)
Country | Link |
---|---|
US (1) | US9270066B2 (en) |
EP (1) | EP2869410A1 (en) |
CA (1) | CA2869549C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9716329B1 (en) * | 2016-05-27 | 2017-07-25 | Fu Tai Hua Industry (Shenzhen) Co., Ltd. | Rotation element and safety plug with the rotation element |
US10476222B2 (en) * | 2016-01-12 | 2019-11-12 | Samsung Electronics Co., Ltd. | Plug-integrated adaptor |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9077093B1 (en) * | 2014-04-23 | 2015-07-07 | Apple Inc. | Magnetic rotation actuator |
CN204361352U (en) * | 2014-12-19 | 2015-05-27 | 富泰华工业(深圳)有限公司 | Plug |
CN109411939B (en) * | 2017-08-16 | 2020-09-11 | 康塔克整合解决股份有限公司 | Plug device |
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JPH0735321Y2 (en) * | 1990-02-20 | 1995-08-09 | 三洋電機株式会社 | Electrical equipment plug device |
JPH0520276U (en) * | 1991-08-28 | 1993-03-12 | 株式会社タムラ製作所 | Stopper for jack knife type plug |
JPH0660073U (en) * | 1993-01-28 | 1994-08-19 | ミツミ電機株式会社 | Retractable plug |
-
2014
- 2014-10-29 EP EP20140190946 patent/EP2869410A1/en not_active Withdrawn
- 2014-10-29 US US14/526,538 patent/US9270066B2/en active Active
- 2014-10-29 CA CA2869549A patent/CA2869549C/en active Active
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JPH03106674A (en) | 1989-09-20 | 1991-05-07 | Hitachi Ltd | Document printing apparatus |
JPH0520276A (en) | 1991-07-15 | 1993-01-29 | Nec Software Kansai Ltd | Data reading form generating device |
JPH0660073A (en) | 1992-08-13 | 1994-03-04 | Fujitsu Ltd | Document editing device |
JP2000150053A (en) | 1998-11-09 | 2000-05-30 | Matsushita Electric Ind Co Ltd | Ac plug clicking mechanism |
JP2002110282A (en) | 2000-09-29 | 2002-04-12 | Sanyo Electric Co Ltd | Electric equipment having foldable plug |
US6275002B1 (en) | 2001-01-23 | 2001-08-14 | Son Kon Co., Ltd. | Rotary charging plug structure of a charger |
US6454578B1 (en) * | 2001-04-13 | 2002-09-24 | Hon Hai Precision Ind. Co., Ltd. | Foldable transformer |
US6641412B2 (en) * | 2001-06-11 | 2003-11-04 | Mitsumi Electric Co., Ltd. | AC adapter that can narrow the blade distance when the plug is stored in the case |
US6821134B2 (en) * | 2001-09-04 | 2004-11-23 | Delta Electronics Inc. | Rotatable plug applied in power supply apparatus |
US7001196B1 (en) * | 2005-03-07 | 2006-02-21 | Cheng Uei Precision Industry Co., Ltd. | Rotatable plug with an arcing resistant mechanism |
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Also Published As
Publication number | Publication date |
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CA2869549C (en) | 2022-04-19 |
CA2869549A1 (en) | 2015-04-29 |
EP2869410A1 (en) | 2015-05-06 |
US20150118873A1 (en) | 2015-04-30 |
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